Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2018

Property, Plant and Equipment

Schedule of property, plant and equipment

	As of December 31
(in thousands)	2017		2018
IT equipment	$	1,060	$	1,079
Laboratory equipment		3,299		3,392
Other equipment		15		124
		4,374		4,595
Less: Accumulated depreciation		(3,047)		(3,456)
Property, plant and equipment, net	$	1,327	$	1,139